In the present work, co-immobilization of cholesterol oxidase (COD) and horseradish peroxidase (POD) on perlite surface was attempted. The surface of perlite were activated by 3-aminopropyltriethoxysilane and covalently bonded with COD and POD via glutaraldehyde. Enzymes activities have been assayed by spectrophotometric technique. The stabilities of immobilized COD and POD to pH were higher th...

Statistical models using multiple linear regression are some of the most widely used methods to study the influence of independent variables in a given phenomenon. This study's objective is to understand the influence of the various components of aerogel-based renders on their thermal and mechanical performance, namely cement (three types), fly ash, aerial lime, silica sand, expanded clay, type...

Groups of 21 male and 21 female mice were given diets containing 20%, 10%, 1% or 0% (control) perlite for 28 weeks. Appearance, behavior, mortality, and food consumption of mice of treated groups were not affected during the experimental period. Males of the 20% and 10% groups did experience slightly reduced growth rate. No significant drug-related changes were found in urinalysis, hematology, ...

Perlite is a type of volcanic glass that formed in nature as result the cooling magma lava and contains water droplets its structure. It raw material not harmful to health, environmentally friendly, easy use because it produced at high temperatures. The properties this enable be used many fields industry have factors determining study titled "Investigation Added Ceramic Body Properties". In art...

The aerogel-modified expanded perlite aggregate and clay (AEP/C) composite boards were produced, physical mechanical properties investigated. aerogel modification of was carried out with optimization the two-step acid-base catalyzed sol–gel method. shrinkage under high-temperature annealing prevented by covering surfaces modification. (AEP) wrapped matrix successfully produced. unit volume mass...

to investigate effect of calcium and growth medium on lilium (asiatic hybrid lilium bulbs “tresor” cultivar) and nutrients uptake, a factorial experiment based on completely randomized design was conducted by three levels of calcium in nutrient solution (2, 4 and 6 mm*) and five growth media (100% perlite, 70% perlite + 30% cocopeat, 50% perlite + 50% cocopeat, 30% perlite + 70% cocopeat, 100% ...

This paper presents the study of a mixed porous media composed of expanded perlite and a nonwoven needle-punched geotextile used to reduce the suspended solids load and concentration in urban runoff. Laboratory procedures were designed to quantify the suspended solids removal efficiency and variation in time of filtration rate. Different grain-size distributions of expanded perlite, diverse sus...

The actual methods of perlite drying are established. radiation method is offered. A description an experimental installation for by the given. kinetic regularities this Graphical dependences moisture content on time, surface temperature and speed time described. influence initial perlite, value heat flux density from infrared emitter, thickness layer, fraction were determined. analysis resulte...